Answer:
The total magnification will be 40x.
Explanation:
As we know if the magnification of the eyepiece of a microscope be [tex]m_{e}[/tex] and that of the objective be [tex]m_{o}[/tex], then the total magnification is given by
[tex]m = m_{e} \times m_{o}[/tex]
Given, [tex]m_{e} = 10x[/tex] and [tex]m_{o} = 4x[/tex]
Therefore total magnification is [tex]m = 10 \times 4 = 40x[/tex]